Adapter for telephone-substation ringers



Jan. 22, 1929.

H. F. OBERGFELL ADAPTER FOR TELEPHONE SUBSTATION RINGERS 2 Sheets-Sheet1 Filed April 20, 1923 Inuan Ur Herbal! F. UbergTEZZ 5% M Jan. 22, 1929.1,699,749

H. F. OBERGFELL ADAPTER FOR TELEPHONE SUBSTATION RINGERS Filed April 20,1923 2 Sneaks-Sheet 2 HEPUETT r." UETE'JTEZ;

Patented Jan. 22, 1929.

urr-En srATns PATENT OFFICE.

HERBERT F. OBERGFELL, OF RIVER FOREST, ILLINOIS, ASSIGTDTOTQ 'BY MESNEAS- SIGNMEIITS, T AUTOMATIC ELECTRIC INC., OF CHICAGO, ILLINOIS, ACORPORA- TION OF DELAWARE.

ADAPTER FOR TELEPHONE-SUBSTATION HINGE BS.

Applicationfiled April 20, 1923. Serial No. 633,538.

, The present invention relates to adapters for telephone substationringers, and more particularly to an adapter which provides means forassembling in a wood box wall telephone a ringer designed for a metalbox wall telephone.

The object of the present invention is the production of an adapter orextension device whereby a ringer designed for a metal box walltelephone may be readily attached to a wood box wall type subscriberstelephone instrument without the necessity of making any alterations inthe ringer mechanism.

This adapter is intended to permit of only one type of ringer beingcarried in stock, which type of ringer can be used on both kinds of walltype subscribers telephone instruments. This adapter not only enablesthe same type of ringer to be used onboth types of instruments, but alsoprovides very simple and eficient means of securing the ringer to thewood box type of instrument and is by no means a temporary. makeshift,but is instead an improvement over prior means for securing a ringer tothe wood box type of instrument, aside from the fact that it enables theone type of ringer to be used for either type of instrument.

The tern1 ringe1" as used in the above paragraphs is defined as denotingan apparatus comprising two electro-magnets and an armature carrying aclapper rod provided with a bell clapper near its extremity. Theapparatus is also provided with a pair of gongs mounted in the bestsuitable relation with the clapper rod and its clapper and adapted toproduce an audible signal when struck by the bell clapper whenever theelectro-magnets are connectechto a predetermined source of current.

Referring now to the drawings, Fig. 1 is a front elevation showing thetop section of a wood box wall telephone with the front cover removedand with a ringer mounted therein by means of two of the improvedadapters. Figure 2 is a sectional view on the line AA of Fig. 1 anddrawn as seen from the left; Fig. 3 shows the adapter unassembled.Figure l is a copy from the copending application of Erickson et al.,Serial No. 549,733, filed April 5, 1922 and illustrates the lowerportion of a metal box wall telephone with the cover removed havingtheringer and the gongs inside the box. The

ringer, of course, isin all details identical to the ringer shown inFig. 1 and designated R, theonlydifierence being that the gongs and theringer are entirely within the instrument and are assembled directly onthe gong posts such as 4 and 5 in an inverted position sothat the openpartof them extends downwardly away from the ringer itself. Intheinstant case, however, the ringer is mounted in the upper part of thelnstrument and the gongs are on the exterior w1th the open part facingthe ringer, as is the practice with wood box instruments. Figure 5 is asectional view of the line BB of Fig. 4 and drawn as seen from the left.This last figure illustrates the manner of mounting the gongs directlyon the 'ong posts as illustrated and described in the applicationreferred to. The full utility of the present invention will beappreciated by considering that the same ringer can be usedfor two typesof wall telephones, that is, for the wood type having the bells mountedoutside of the box, as well as for the metal box type, having the bellsmounted entirely inside the box.

The reference character 2 indicates the wood box, It denotes generallythe ringer, 4t and 5 are the gong posts of the ringer, 6 is a machinebolt by means of which the lefthand gong 7 is secured, 8 is a hexagonalnut which is screwed on to the threaded portion of the stud or extensionrod 11, Figs. 2 and 3, 9 is a hexagonal locking washer and can i be seenbest in Fig. 3, while 10 is a round centering washer.

Like parts are denoted alike throughout the drawings in order tofacilitate the reading of the detailed description which is now tofollow.

In order to assemble the adapting extension rodsor studs, such as 11, onthe ringer R, the centering washers, such as 10, are slipped onto thetwo studs in the position shown in Fig. 2. Thestuds are then screwedinto the gong posts 4 and 5, after which the ringer is slipped'in placewith the extension studs extending through holes, such as hole 12, Fig.2, in the instrument. The ringer is accurately positioned owing to theshape of the above mentioned centering washers, as can be seen best inFig. 2. The hexagonal washers, such as 9, are next slipped over theadapting studs and the entire assembly is held together rigidly, uponthe hexagonal only necessary to p ace the eccentric gong 7 and its matein position. The gongs are secured by the bolts, such as 6, which arethreaded into theextension studs, ascan be seen in Fig. 2. a x

he. structure for supporting thebells inside the box is shown in Figs. tand 5 and will bereadily understood without elaborate description. Thesedrawings illustrate a,

metal, box, designated by the reference numeral 20 having aringer R,which is in all details the sameas-the ringer R, shownin Fig. 1. In thiscase, however, the gongs are mounted inside the-box and directly on thegong posts such asst and 5 shown in Fig. 4.

In other words, the adapter shown in Fig. 3

is omitted and the gongs are mounted in an inverted position with. theopen part away fromrtheiringer and attached to the gong posts by meansoii'a machine bolt designated 6, as shown in Fig. 5. p l v It will beseen from the foregoing that the present invention provides means forassembling in a wood box wall telephone a ringer which is designed foruse in connection with metal box wall telephone.

Althoughthe improved adapter has been described in connection with awall telephone, it may be applied equally well to a ringer: of thealiovetype when the same is to be mounted in a bell box used inconneetionwith a desk type telephone instrument.

I claim a 1. The combination, with a ringer having gong posts of a sizesuitable for mounting gongs. in atelephone box withvthe open side of thegongs away from the ringer, of adapters comprising extension rodsattached to the gong posts, and having means for mounting the gongs onsaid rod on the outside of another type of telephone box with the openside of the gongs toward said ringer.

2. An adapter for use in mounting a ringer of the inside gong typehaving a gong support, in a. telephone box of the outside gong type,saidadapter comprising a stud threaded on one end and attached to saidringer gong support, a gong, means for sup portm said gong on the otherend of saidstud, an pieans for securing said stud to said telephone 3.An adapter for use in mounting aringer of the inside gong type in atelephone box of the outside gon type, normal gong supports on saidringer i01- mounting the gongs, said adapter comprising an extension rodattached to saidnormal gong supports between said gongs andsaid gongsupports.

4. In a telephone box, a ringer, ongs therefor, said ringer being insidesai 'box and having normal gong supports also inside said box, extensionstuds attached to said normal gong supports andextending throughopenings in said box, means for attaching said studs to said gongsupports, meansior attaching said studs to sand box, and means forattaching said gongs to the-outside ends of said studs.

5. In combination a ringer having gon'gs, means including gong postsfor. mounting said gongs on said ringer, stud bolt adapters attached tosaid gong posts and extending outside of saidbox, means for mountingsaid gongs on said adapters, and means including said adapters and saidgong posts for supporting said ringer in said bellbox.

In witness whereof, I hereunto subscribe my name this 16th day ofAprihA. D. 1923.

HEBBERTIFL OBERGFELL.

